A riot policeman's clothing catches fire after demonstrators threw petrol bombs at them, as violence erupted during a march to mark the first anniversary of the police shooting of a teenager, whose death sparked massive riots, in Athens, on Sunday.

AP

The death last year of 15-year-old Alexandros Grigoropoulos sent youths rampaging through cities for two weeks last December. At Sunday's prtest, anarchists also got in the act, as can be seen from the banner that carries the anarchy symbol.

EPA

A protestor throws stones at riot police in Athens. More than 6,000 police were dispatched throughout the city to stop the riots.

AP

Two police officers will go on trial in the new year for the murder of Grigoropoulos. Here, a protester takes it out on a fallen police officer.

Getty Images

A riot policeman confronts a protester. Protesters hurled rocks and burning garbage at police as violence erupted during a march.